All five UFC 131 contestants who underwent testing for performance-enhancing drugs and recreational/drugs of abuse at UFC 131 passed their tests.

Main-event contestants Shane Carwin and Junior Dos Santos, as well as UFC 131 winners
Donald Cerrone, Dave Herman, Nick Ring and Krzysztof Soszynski were
selected for testing. However, due to Carwin’s condition after his
hard-fought decision loss to Dos Santos, he was not required to provide a
sample.

The remaining five were all tested using the World Anti-Doping Agency’s international standard for in-competition testing.

Featuring a heavyweight title eliminator between Dos Santos and Carwin, UFC 131 took place on June 11 at Rogers Arena in Vancouver, British Columbia, Canada.

VAC officials made special mention in today’s report that Carwin was willing to assist in the process. Nevertheless, the VAC elected to err on the side of fighter safety in declining to follow through.

“Samples were taken as soon as practicable following each athlete’s respective contest at the event,” the statement read. “All ‘A’ samples were subsequently tested for prohibited substances and prohibited methods in compliance with WADA’s International Standard for Laboratories.

“Despite Mr. Carwin’s willingness to complete the sample collection process, the VAC unilaterally exercised its discretion to rescind its selection of Mr. Carwin for anti-doping testing shortly following his bout at the event. In making such a determination, in its absolute discretion, the VAC seeks to balance the guiding values of ‘fairness’ and ‘fighter safety.'”

When asked to clarify as the whether Carwin was tested pre-fight, VAC representative Jonathan Tweedale explained that anti-doping tests are only issued post-fight. However, after evaluating Carwin’s condition, the commission elected to send him to the hospital rather than hold the fighter for a urine sample.

“Under the Commission’s procedures, as implemented by the Canadian Centre for Ethics in Sport at the event, those athletes selected for anti-doping testing were tested only after their contest,” Tweedale told MMAjunkie.com. “Shane Carwin, like most of the other fighters on the card, wasn’t tested because of the discretionary call that the Commission made in the circumstances following his fight.”

Following his UFC 131 loss, Carwin was suspended for 60 days with no contact during training for 45 days due to “multiple facial lacerations and a nasal fracture,” according to the VAC’s official report.

For more on UFC 131, including the night’s official results, check out the UFC Events section of MMAjunkie.com.

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